CN109675527A - It is a kind of for go water removal in heavy metal adsorbent material and its preparation method and application - Google Patents
It is a kind of for go water removal in heavy metal adsorbent material and its preparation method and application Download PDFInfo
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- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/22—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising organic material
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/02—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
- B01J20/10—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising silica or silicate
- B01J20/103—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising silica or silicate comprising silica
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/28—Treatment of water, waste water, or sewage by sorption
- C02F1/281—Treatment of water, waste water, or sewage by sorption using inorganic sorbents
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/28—Treatment of water, waste water, or sewage by sorption
- C02F1/285—Treatment of water, waste water, or sewage by sorption using synthetic organic sorbents
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2220/00—Aspects relating to sorbent materials
- B01J2220/40—Aspects relating to the composition of sorbent or filter aid materials
- B01J2220/46—Materials comprising a mixture of inorganic and organic materials
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2220/00—Aspects relating to sorbent materials
- B01J2220/40—Aspects relating to the composition of sorbent or filter aid materials
- B01J2220/48—Sorbents characterised by the starting material used for their preparation
- B01J2220/4812—Sorbents characterised by the starting material used for their preparation the starting material being of organic character
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2220/00—Aspects relating to sorbent materials
- B01J2220/40—Aspects relating to the composition of sorbent or filter aid materials
- B01J2220/48—Sorbents characterised by the starting material used for their preparation
- B01J2220/4875—Sorbents characterised by the starting material used for their preparation the starting material being a waste, residue or of undefined composition
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2220/00—Aspects relating to sorbent materials
- B01J2220/40—Aspects relating to the composition of sorbent or filter aid materials
- B01J2220/48—Sorbents characterised by the starting material used for their preparation
- B01J2220/4875—Sorbents characterised by the starting material used for their preparation the starting material being a waste, residue or of undefined composition
- B01J2220/4887—Residues, wastes, e.g. garbage, municipal or industrial sludges, compost, animal manure; fly-ashes
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/20—Heavy metals or heavy metal compounds
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/20—Heavy metals or heavy metal compounds
- C02F2101/22—Chromium or chromium compounds, e.g. chromates
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- Analytical Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Life Sciences & Earth Sciences (AREA)
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Abstract
The present invention disclose it is a kind of for go water removal in heavy metal adsorbent material and its preparation method and application, preparation method specifically includes the following steps: 1), acidleach red mud: configuration concentrated hydrochloric acid and polycarboxylate dispersant mixed solution；Red mud is added in mixed solution and is reacted, acidleach red mud is obtained；2), the preparation of adsorbent material: being added acidleach red mud to solvent, 3- aminopropyl triethoxysilane be then added dropwise into solution, through washing, suction filtration, drying acquisition for removing the adsorbent material of heavy metal in water removal after being stirred to react.The present invention uses red mud to be modified for raw material by organic acid and organic solvent, and the adsorbent material raw material of preparation is easy to get, simple process and low cost.Adsorbent material not only has biggish specific surface area but also adds that dosage is few, and time of equilibrium adsorption is short in use, and adsorption efficiency is high, and the heavy metal wastewater thereby of processing is at low cost.Adsorbent material in waste water copper, lead, chromium waste water eliminating rate of absorption is 90% or more；It is suitble to industrial production and use.
Description
Technical field
The invention belongs to water-treatment technology field, in particular to it is a kind of for go water removal in heavy metal adsorbent material and its
Preparation method.
Background technique
The ever-increasing trend of Heavy Metals in Waters seriously endangers human health.Lead, cadmium, copper and its compound are because extensively
Applied to industries such as mining, smelting, electronics, plating, petroleum, Production of manure, it has also become important pollution sources in sewage and by
Concern.Therefore, go removing heavy metals that there is great environment and technical effect from water body.
Absorption method is to remove the common method of heavy metal in waste water, and the effect of heavy-metal ion removal depends primarily on suction
The performance of enclosure material.Ideal adsorbent material should have that applied widely, adsorption capacity is big, adsorption time is short, regenerability is good
And lower-price characteristic.It is active carbon that most mainstream, which is also most widely used adsorbent material, on the market at present.Because its have compared with
Big specific surface area and adsorption capacity becomes ideal adsorbent material.But active carbon is at high price, should not lack raw etc.
Point greatly limits its extensive use.Therefore the adsorbent material that cheap, preparation process is simple, removal efficiency is good is developed
As its important evaluation factor.
Red mud be although produce in alumina process the waste residue that generates but its chemical component is more stable, granularity is smaller, and
With cementing hole rack-like structure.Because of the continuous development of aluminum oxide industry, the discharge amount of red mud is increasing, due to red mud itself
The reasons such as strong basicity cause the difficulty that is recycled, and the long-term stockpiling of red mud not only will cause alkalization of soils, water body basicity liter
High, atmospheric dust such as increases at the pollution, so the technology that is recycled of the red mud of research and development high-efficiency and economic, improves red mud utilization rate,
It is extremely urgent to the pollution of environment and security risk to reduce red mud.
Red mud stability in water and settleability are preferable, therefore are gone in water removal using red mud as potential adsorbent material
Pollutant, be always environmental area research hot spot.Red mud has biggish porosity, preferable settling property and certain
Specific surface area, which has it also in the case where not having to modified, certain selective adsorption capacity to heavy metal ion in water；But
It is lower not modified and be modified in itself treatment effeciency in situation.
Summary of the invention
The purpose of the present invention is to provide a kind of for removing adsorbent material of heavy metal and preparation method thereof in water removal and answering
With to solve the above technical problems.
To achieve the goals above, the present invention adopts the following technical scheme:
It is a kind of for go water removal in heavy metal adsorbent material preparation method, comprising the following steps: after hydrochloric acid acidleach
Red mud synthesized with 3- aminopropyl triethoxysilane be made.
Further, specifically includes the following steps:
1), acidleach red mud: the mixed solution of configuration concentrated hydrochloric acid and polycarboxylate dispersant；Red mud is added anti-in mixed solution
It answers, obtains acidleach red mud；
2), the preparation of adsorbent material: acidleach red mud is added to solvent, 3- aminopropyl-triethoxy is then added dropwise into solution
Silane, through washing, suction filtration, drying acquisition for removing the adsorbent material of heavy metal in water removal after being stirred to react.
Further, the red mud is Bayer process red mud.
Further, in the mixed solution of step 1), the mass concentration ratio of polycarboxylic acids is 0.05~0.08%.
Further, red mud is added in mixed solution with liquid-solid ratio for 8~5:1 in step 1), continuous at 60~75 DEG C
It is stirred to react 0.5~1h, obtains acidleach red mud；The ratio of red mud and concentrated hydrochloric acid dosage is 5g:(6~12 in step 1)) mol.
Further, in step 2), the ratio of acidleach red mud and 3- aminopropyl triethoxysilane are as follows: (1~3) g:(1~
5)mL。
Further, in step 2), reaction temperature is 100 DEG C~120 DEG C, and the reaction time is 8~12h.
Further, solvent described in step 2) is toluene；The ratio of acidleach red mud and toluene be (1~3) g:(50~
100)mL。
Suction for going in water removal to be used to go heavy metal in water removal prepared by the preparation method of the adsorbent material of heavy metal
Enclosure material.
For going the application of the adsorbent material of heavy metal in water removal, comprising: by the suction for being used for heavy metal in water removal
Enclosure material is added in waste water to be processed and is adsorbed, and removes Pb In Exhausted Water to be processed, copper, chromium；The input amount of adsorbent material be 1~
2g/L, adsorption temp are room temperature, and adsorption time is 0.5h~2h.
Compared with the existing technology, the invention has the following advantages that
1), the present invention uses red mud to be modified for raw material by organic acid and organic solvent, and the adsorbent material of preparation is former
Material is easy to get, simple process and low cost.
2), adsorbent material not only has biggish specific surface area but also to add dosage in use few, when adsorption equilibrium
Between it is short, adsorption efficiency is high, and the heavy metal wastewater thereby of processing is at low cost.
3), adsorbent material in waste water copper, lead, chromium waste water eliminating rate of absorption is 90% or more；It is suitble to certain scale
Industrial production and use.
Detailed description of the invention
The accompanying drawings constituting a part of this application is used to provide further understanding of the present invention, and of the invention shows
Examples and descriptions thereof are used to explain the present invention for meaning property, does not constitute improper limitations of the present invention.In the accompanying drawings:
Fig. 1 is the X-ray diffractogram of adsorbent material of the present invention；
Fig. 2 is the Infrared-Visible spectrogram of red mud control before and after acidleach；
Fig. 3, Fig. 4, Fig. 5, Fig. 6 are the scanning electron microscope (SEM) photograph of adsorbent material of the present invention.
Specific embodiment
The present invention will be described in detail below with reference to the accompanying drawings and embodiments.It should be noted that in the feelings not conflicted
Under condition, the features in the embodiments and the embodiments of the present application be can be combined with each other.
Following detailed description is exemplary explanation, it is intended to provide further be described in detail to the present invention.Unless another
It indicates, all technical terms of the present invention contain with the normally understood of the application one of ordinary skill in the art
Justice is identical.Term used in the present invention is merely to describe specific embodiment, and be not intended to limit according to the present invention
Illustrative embodiments.
The invention belongs to water treatment field, the purpose that the present invention is used to remove the adsorbent material of heavy metal in water removal is to remove water
Middle copper, lead, chromium heavy metal ion.
The present invention is a kind of for removing the adsorbent material of heavy metal in water removal, is by the red mud after certain density hydrochloric acid acidleach
It is made with synthesized by 3- aminopropyl triethoxysilane (APTES).
Mass ratio 1:0.1~0.5 of red mud and 3- aminopropyl triethoxysilane in the synthesis adsorbent material.Preparation method
Including the following steps: using fresh Bayer process red mud as raw material, in 60 DEG C~75 DEG C and concentrated hydrochloric acid and polycarboxylic acids point
Powder react 0.5~1h come be made the purpose of acidleach red mud be increase its specific surface area.It is washed out, filters, drying obtained sample；
The washed mistake of 8~12h is reacted with 3- aminopropyl triethoxysilane in toluene using organic synthesis method at 100 DEG C~120 DEG C
Up to changed red mud adsorbent material after filter drying.Adsorbent material selectivity with higher to heavy metal copper, lead, chromium in water is inhaled
Attached effect, preparation method is simple, and process is short, and reaction condition is mild；Adsorbent material obtained is in handling water during heavy metal
Dosage is small, reach the gentle time it is short the advantages that.
The predominant amount that red mud can be obtained through elemental analysis is SiO2；Using the principle of organic synthesis through red mud and 3- aminopropyl
Triethoxysilane reacts under certain condition may make amino to be grafted onto red mud surface and have it with heavy metal specific in water
Preferable chelation and there is stronger selective absorption effect.
Embodiment 1:
It is a kind of for go water removal in heavy metal adsorbent material preparation method, comprising the following steps:
(1) Bayer process red mud for taking 5g fresh dries 2h in 105 DEG C of baking ovens to remove a small amount of moisture in red mud then
Taking-up is ground to 80 mesh；Then red mud is added to the concentrated hydrochloric acid of 6mol and mass concentration ratio is 0.05% polycarboxylate dispersant's
In mixed solution, with liquid-solid ratio be 5:1, reaction 0.5h washing, drying are continuously stirred at 65 DEG C after obtain red mud after acidleach.
(2) it takes after acidleach red mud 1g to be put into 50mL toluene solution and is slowly dropped into 1mL3- aminopropyl triethoxysilane company
Continue and continuously stir 8~10h of reaction at 110 DEG C, filters, dries after dehydrated alcohol, toluene, distilled water respectively wash twice after reaction
Dry synthetic sample to obtain the final product.
Using:
The adsorbent material prepared is used to remove heavy metal ion copper, lead in waste water.It is added into beaker initial dense
Degree is the CuSO of 450mg/L4With the PbNO of 400mg/L3Mixed solution 500mL, the dosage of adsorbent material is 1g, and magnetic force stirs
60min is mixed, solution and the adsorbent material heavy metal concentration after ICPE-9000 measures absorption are separated by filtration after stirring, is adsorbed
Material under the concentration copper, lead waste water eliminating rate of absorption is 95% or more.
Embodiment 2:
It is a kind of for go water removal in heavy metal adsorbent material preparation method, comprising the following steps:
(1) Bayer process red mud for taking 5g fresh dries 2h in 105 DEG C of baking ovens to remove a small amount of moisture in red mud then
Taking-up is ground to 80 mesh；Then red mud is added to the concentrated hydrochloric acid of 10mol and mass concentration ratio is 0.06% polycarboxylate dispersant
In mixed solution；Be 6:1 with liquid-solid ratio, continuously stirred at 68 DEG C reaction 1h washing, drying after obtain red mud after acidleach.
(2) it takes after acidleach red mud 2g to be put into 50mL toluene solution and is slowly dropped into 3mL3- aminopropyl triethoxysilane company
Continue and continuously stir 8~10h of reaction at 115 DEG C, filters, dries after dehydrated alcohol, toluene, distilled water respectively wash twice after reaction
Dry synthetic sample to obtain the final product.
Using:
The adsorbent material prepared is used to remove the heavy metal ion chromium in waste water.Initial concentration is added into beaker is
The K of 350mg/L2Cr2O7The dosage of solution 500mL, adsorbent material are 1g, and magnetic agitation 60min is separated by filtration molten after stirring
Liquid and the adsorbent material heavy metal concentration after ultraviolet-visible photometer measures absorption, obtain adsorbent material to the chromium under the concentration
Waste water eliminating rate of absorption is 90% or more.
Embodiment 3:
It is a kind of for go water removal in heavy metal adsorbent material preparation method, comprising the following steps:
(1) Bayer process red mud for taking 5g fresh dries 2h in 105 DEG C of baking ovens to remove a small amount of moisture in red mud then
Taking-up is ground to 80 mesh；Then red mud is added to the concentrated hydrochloric acid of 12mol and mass concentration ratio is 0.08% polycarboxylate dispersant
Mixed solution in liquid-solid ratio be 8:1, reaction 1h washing, drying are continuously stirred at 70 DEG C after obtain red mud after acidleach.
(2) it takes after acidleach red mud 3g to be put into 100mL toluene solution and is slowly dropped into 5mL3- aminopropyl triethoxysilane company
Continue and continuously stir 8~12h of reaction at 120 DEG C, filters, dries after dehydrated alcohol, toluene, distilled water respectively wash twice after reaction
Dry synthetic sample to obtain the final product.
Using:
The adsorbent material prepared is used to remove heavy metal ion copper, lead, chromium in waste water.It is added into beaker initial
Concentration is the CuSO of 450mg/L4, 400mg/L PbNO3With the K of 350mg/L2Cr2O7Mixed solution 500mL, adsorbent material
Dosage is 1g, magnetic agitation 60min, and solution and the adsorbent material weight after ICPE-9000 measures absorption are separated by filtration after stirring
Metal concentration, obtain adsorbent material under the concentration copper, lead, chromium waste water eliminating rate of absorption is 95% or more.
Fig. 1 is the X-ray diffractogram of adsorbent material of the present invention；Fig. 1 illustrates: the main component of former Bayer process red mud is
SiO2, dicalcium silicate (Ca2SiO4)、Fe2O3, perovskite (CaTiO3), calcite (CaCO3), aspidelite CaTiO (SiO4)；Through acidleach
With it is organically-modified after respectively 26.5 °, 32.9 ° and 46.7 ° be SiO2Diffraction maximum, illustrate that red mud main component is after modified
Silica and other heavy metal elements are removed and achieve the purpose that purification.
Fig. 2 is the Infrared-Visible spectrogram of adsorbent material of the present invention；Figure two illustrates: after before modified 470,800,
1109cm-1There is the flexural vibrations peak of Si-O-Si in left and right, Si-O-Si waves stretching vibration peak, the flexible vibration of Si-O-Si antisymmetry
Dynamic peak, SiO after illustrating before modified2Skeleton does not change；Appear in 2938,2848cm-1Peak correspond to 3- aminopropyl three
C-H stretching vibration peak on Ethoxysilane propyl chain；The peak for appearing in 1500~1600 corresponds to amino (N-H) deformation vibration
Peak.Prove that the adsorbent material is 3- aminopropyl triethoxysilane and red mud modified product.
Fig. 3,4,5,6 are the scanning electron microscope (SEM) photograph of adsorbent material of the present invention；Fig. 3,4 explanations: Fig. 3 is non-addition polymerization carboxylic dispersants
Glue of the former Bayer process red mud particle based on some cementing connections, supplemented by crystallization connection is observed by surface sweeping Electronic Speculum with before acidleach
Concretio body is at its duct of red mud particle shape irregular surface rough porous is mainly formed with sheet-like particle accumulation and is distributed not
Uniformly；Fig. 4 is the red mud scanning electron microscope (SEM) photograph after addition polymerization carboxylic dispersants and concentrated hydrochloric acid acidleach, as can be seen from the figure modified
The surface texture of red mud is close, and glue connection, which disappears, more fold and aperture occurs, and particle surface forms crystal structure.
Fig. 5,6 explanations: Fig. 5 is the red mud scanning electron microscope (SEM) photograph after addition polymerization carboxylic dispersants and concentrated hydrochloric acid acidleach, can in figure
To find out that the aperture of many densifications occurs in modified red mud surface later, the aperture duct that becomes smaller becomes larger；Fig. 6 is first through polycarboxylic acids point
Powder and concentrated hydrochloric acid acidleach are later again by the modified red mud surface sweeping electron microscope of 3- aminopropyl triethoxysilane, by organic function
Red mud appearance profile after energyization is more coarse, and agglomeration occurs between particle, and some is even agglomerated into bulky grain, this explanation
After organo-functional group is modified, chemical reactivity site increases, and surface polarity increases, and easily reacts each other, generates
Reunite, can prove that organo-functional group is successfully supported on red mud surface from side.
As known by the technical knowledge, the present invention can pass through the embodiment party of other essence without departing from its spirit or essential feature
Case is realized.Therefore, embodiment disclosed above, in all respects are merely illustrative, not the only.Institute
Have within the scope of the present invention or is included in the invention in the change being equal in the scope of the present invention.
Claims (10)
1. a kind of for going the preparation method of the adsorbent material of heavy metal in water removal, which comprises the following steps: by salt
Red mud after acidleach is synthesized with 3- aminopropyl triethoxysilane to be made.
2. according to claim 1 a kind of for going the preparation method of the adsorbent material of heavy metal in water removal, feature exists
In, specifically includes the following steps:
1), acidleach red mud: the mixed solution of configuration concentrated hydrochloric acid and polycarboxylate dispersant；Red mud is added in mixed solution and is reacted,
Obtain acidleach red mud；
2), the preparation of adsorbent material: acidleach red mud is added to solvent, 3- aminopropyl-triethoxy silicon is then added dropwise into solution
Alkane, through washing, suction filtration, drying acquisition for removing the adsorbent material of heavy metal in water removal after being stirred to react.
3. according to claim 1 a kind of for going the preparation method of the adsorbent material of heavy metal in water removal, feature exists
In the red mud is Bayer process red mud.
4. according to claim 2 a kind of for going the preparation method of the adsorbent material of heavy metal in water removal, feature exists
In in the mixed solution of step 1), the mass concentration ratio of polycarboxylic acids is 0.05~0.08%.
5. according to claim 2 a kind of for going the preparation method of the adsorbent material of heavy metal in water removal, feature exists
In, in step 1) red mud with liquid-solid ratio be 8~5:1 be added mixed solution in, continuously stirred at 60~75 DEG C reaction 0.5~
1h obtains acidleach red mud；The ratio of red mud and concentrated hydrochloric acid dosage is 5g:(6~12 in step 1)) mol.
6. according to claim 2 a kind of for going the preparation method of the adsorbent material of heavy metal in water removal, feature exists
In, in step 2), the ratio of acidleach red mud and 3- aminopropyl triethoxysilane are as follows: (1~3) g:(1~5) mL.
7. according to claim 2 a kind of for going the preparation method of the adsorbent material of heavy metal in water removal, feature exists
In in step 2), reaction temperature is 100 DEG C~120 DEG C, and the reaction time is 8~12h.
8. according to claim 2 a kind of for going the preparation method of the adsorbent material of heavy metal in water removal, feature exists
In solvent described in step 2) is toluene；The ratio of acidleach red mud and toluene is (1~3) g:(50~100) mL.
9. described in any item of the claim 1 to 8 a kind of for going to the preparation method institute of the adsorbent material of heavy metal in water removal
The adsorbent material for being used to go heavy metal in water removal of preparation.
10. as claimed in claim 9 for going the application of the adsorbent material of heavy metal in water removal characterized by comprising by institute
State and adsorbed for going the adsorbent material of heavy metal in water removal to be added in waste water to be processed, remove Pb In Exhausted Water to be processed, copper,
Chromium；The input amount of adsorbent material is 1~2g/L, and adsorption temp is room temperature, and adsorption time is 0.5h~2h.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110721655A (en) * | 2019-08-23 | 2020-01-24 | 河南长兴实业有限公司 | Preparation method of heavy metal adsorbent based on red mud |
| CN112058234A (en) * | 2020-08-24 | 2020-12-11 | 昆明理工大学 | Method for adsorbing heavy metal by using silanized nickel-iron slag powder |
| CN113231012A (en) * | 2021-03-25 | 2021-08-10 | 长江水利委员会长江科学院 | Method for treating sludge sewage by using modified red mud and modified steel slag |
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